Hi All. I would like to change the layout of my production database, I would like to add a column to an existing table. As I think before the ALTER TABLE statement all access to the database should be denied/ended, then the ALTER TABLE should be performed, and then user/applications should be able to use the database once again.
My tables is quite small ~4MB data & indexes. So is the ALTER TABLE on a running/opened to clients database/table desirable or should it be run when all access to the database/table is forbidden? Best regards, Rafal Radecki.
